Disclosed herein is an improved flyback converter that separates the magnetic components of the converter into a transformer and a separate, discrete energy storage inductor. This arrangement can improve the operating efficiency of the converter by reducing the commutation losses as compared to a conventional flyback converter. The magnetic components may be constructed on separate magnetic cores or may be constructed on magnetic cores having at least one common element, thereby allowing for at least partial magnetic flux cancellation in a portion of the core, reducing core losses.

An integrated circuit (IC) assembly includes a first power stage adapted to receive an input voltage and a second power stage adapted to provide an isolated output voltage. The IC also includes a transformer coupled between the first and second power stages. The IC further includes a detuning circuit coupled to the transformer, and a receiver circuit coupled to the first power stage. The receiver circuit includes an integrator configured to integrate a switching signal within the first power stage.

A transformer for a power converter, comprising: a first auxiliary subcore, a central subcore, and a second auxiliary subcore, each respective subcore comprising a lower plate, at least one pair of central spacers, and an upper plate, the lower plate, at least one pair of central spacers, and the upper plate of each subcore, being respectively separated by a gap; the first auxiliary subcore and the central subcore being separated by a gap; the second auxiliary subcore and the central subcore being separated by a gap; a primary coil, encircling a first spacer of the first auxiliary subcore and a first spacer of the central subcore; and a secondary coil, encircling a second spacer of the second auxiliary subcore and a second spacer of the central subcore.

A power conversion apparatus includes a switching circuit including multiple switching elements, and a control unit configured to control and switch the multiple switching elements included in the switching circuit at a predetermined switching frequency with a direct current voltage applied to an input terminal of the switching circuit. The switching circuit is configured to convert the direct current voltage applied to the input terminal and to output a converted electric current. The switching frequency is set such that the switching frequency and a main frequency component of a ripple occurring in the electric current are out of a frequency range used for communication with a vehicle-mounted receiver.

The present embodiments relate to an inductor device, a filter device and a steering assist device. The inductor device can comprise: a core including a magnetic material; and a wire which is wound around the core and which includes a low resistance material.

The subject matter described herein provides systems and techniques for the integration of TLVR technology in a vertical power VR module. A multiple-secondary TLVR topology using a controlled leakage inductance in the place of a separate compensation inductor, Lc, may be employed for the vertical power VR module. In addition, the capacitance inside the device to which the TLVR based vertical power VR module supplies power, rather than an output capacitance board, may be used in order to allow the module to be a single layer. Example structures that may include one or more primary windings and/or one or more secondary windings for each of possibly multiple linked phases of the TLVR based module are provided. The windings may be formed using traditional copper windings or printed circuit board (PCB) copper trace winding.

Some embodiments may include a nanosecond pulser comprising a plurality of solid state switches; a transformer having a stray inductance, L.sub.s, a stray capacitance, C.sub.s, and a turn ratio n; and a resistor with a resistance, R, in series between the transformer and the switches. In some embodiments, the resonant circuit produces a Q factor according to $Q=\frac{1}{R}\sqrt{\frac{L_s}{C_s}};$
and the nanosecond pulser produces an output voltage V.sub.out from an input voltage V.sub.in, according to V.sub.out=QnV.sub.in.

To provide a semiconductor device signal transmission circuit for drive-control, a method of controlling a semiconductor device signal transmission circuit for drive-control, a semiconductor device, a power conversion device, and an electric system for a railway vehicle capable of preventing malfunction due to noise while speeding up or reducing loss of a switching operation. The semiconductor device signal transmission circuit for drive-control that is connected between a semiconductor device constituting an arm in a power conversion device and a drive circuit configured to drive the semiconductor device, including: an inductor; and an impedance circuit including a switch and connected in parallel with the inductor.

A pulse control device 10 comprises: a switch output unit 100 which generates a pulse output voltage Vo from a direct-current input voltage Vi and supplies the pulse output voltage Vo to a load (such as a relay coil 21 of a mechanical relay 20); a low-pass filter unit 300 which receives a feedback input of the pulse output voltage Vo and generates a feedback voltage Vfb; and an output feedback control unit 200 which receives an input of the feedback voltage Vfb and controls the switch output unit 100 so that an average value of the pulse output voltage Vo becomes constant. The low-pass filter unit 300 may be configured without a coil.

A DAB converter that is capable of inhibiting a decrease in the transmission efficiency of electric power due to an individual difference of the inductance. A DAB converter including: a transformer having a primary-side winding and a secondary-side winding; a first and second full bridge circuit; a first and second capacitor; and a control unit, in which, the primary and secondary side winding is connected between a midpoint and a midpoint of the first full bridge circuit, the first capacitor is connected between two input/output terminals included in the first full bridge circuit, the second capacitor is connected between two input/output terminals included in the second full bridge circuit, and the control unit configured to adjust a phase difference between the switching of the first and second full bridge circuit based on an estimated value of an inductance of the DAB converter.